package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.entity.SpuInfoEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.sun.corba.se.spi.orbutil.threadpool.NoSuchThreadPoolException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import org.springframework.util.StringUtils;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    AttrGroupService attrGroupService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    ThreadPoolExecutor executor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){

            wrapper.and((w)->{
                w.eq("sku_id",key).or().like("sku_name",key);
            });

        }


        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(brandId)){

            wrapper.eq("brand_id",brandId);

        }

        String catalogId = (String) params.get("catalogId");
        if(!StringUtils.isEmpty(catalogId)&&!"0".equalsIgnoreCase(catalogId)){


            wrapper.eq("catalog_id",catalogId);
        }

        String min = (String) params.get("min");
        if(!StringUtils.isEmpty(min)){

           wrapper.ge("price",min);

        }

        String max = (String) params.get("max");
        if(!StringUtils.isEmpty(max)){

            wrapper.le("price",max);


        }

        IPage<SkuInfoEntity> page = this.page(new Query<SkuInfoEntity>().getPage(params),
                wrapper);


        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkuBySpuId(Long spuId) {


        List<SkuInfoEntity> list = this.list( new QueryWrapper<SkuInfoEntity>().eq("spu_id",spuId));
        return list;
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {



        SkuItemVo skuItemVo = new SkuItemVo();

        //异步任务编排
        CompletableFuture<SkuInfoEntity> infoFuture =  CompletableFuture.supplyAsync(()->{

            //1.sku基本信息获取
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);

            return info;
        },executor);


        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res) -> {

            //3.获取spu的销售属性组合
            List<SkuItemVo.SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrBySpuId(res.getSpuId());

            skuItemVo.setSaleAttrVos(saleAttrVos);
        }, executor);


        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res) -> {

            //4.获取spu的介绍


            SpuInfoDescEntity spuInfoDesc = spuInfoDescService.getById(res.getSpuId());

            skuItemVo.setDesp(spuInfoDesc);

        }, executor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync(res -> {
            //5.获取spu的规格参数信息

            List<SkuItemVo.SpuItemBaseAttrGroup> attrGroupVos = attrGroupService.getAttrGroupWithAttrsBySpuId(res.getSpuId(), res.getCatalogId());

            skuItemVo.setGroupAttrs(attrGroupVos);


        }, executor);


//
//        Long catalogId = info.getCatalogId();
//        Long spuId = info.getSpuId();

        CompletableFuture<Void>  imagesFuture = CompletableFuture.runAsync(() -> {

            //2.sku图片信息
            List<SkuImagesEntity> images = skuImagesService.getImageBySkuId(skuId);

            skuItemVo.setImages(images);

        }, executor);


        //等待所有任务都完成

        CompletableFuture.allOf(saleAttrFuture,descFuture,baseAttrFuture,imagesFuture).get();


        return  skuItemVo;


    }

}